This has been pointed out multiple times to be a major distortion of WotC saying "hey, you know those racist, sexist and ableist tropes of the past? Maybe stop doing those."Is that your take? I see recent D&D books actually discuss bad-wrong-fun. There is a whole callout in Van Richten's Guide to Ravenloft telling people to stop playing games a certain way and to stop being inspired by genre tropes.
They are not saying your style of play is wrong, no matter how many times you assert otherwise. They are saying that some of the material TSR's Ravenloft drew from is based on hatred and maybe, just maybe, there's enough hatred in the world already that you don't need to have "play racism" at your table.
If this idea really upsets you that much, it's more of a you thing than a them thing.